一般注記Discovering the heart of the world. Migrations: The making of the Mandan people ; Contacts: Villages and newcomers ; Earthwork: The substance of daily life ; Connections: Sustained European contact begins -- Inventions and reinventions. Customs: The spirits of daily life ; Upheavals: Eighteenth-century transformations ; Scourge: The smallpox of 1781 -- At the heart of many worlds. Convergences: Forces beyond the horizon ; Hosts: The Mandans receive Lewis and Clark ; Corn: The fuel of Plains commerce -- New adversities. Sheheke: The metamorphosis of a chief ; Reorientation: The United States and the Upper Missouri ; Visitations: Rats, steamboats, and the Sioux ; Decimation: "The smallpox has broke out".